@article{DAN_1986_290_4_a6,
     author = {M. M. Khapaev and K. V. Mal'kov},
     title = {Asymptotic behavior of solutions of differential equations with},
     journal = {Doklady Akademii Nauk},
     pages = {800--805},
     publisher = {mathdoc},
     volume = {290},
     number = {4},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_290_4_a6/}
}